[gcc r14-8490] install.texi: For gcn, recommend LLVM 15, unless gfx1100 is disabled

[gcc r14-8490] install.texi: For gcn, recommend LLVM 15, unless gfx1100 is disabled

[Tobias Burnus]

https://gcc.gnu.org/g:c1a38cd67e1632d67fe9dfae0d09fd599fce6d76

commit r14-8490-gc1a38cd67e1632d67fe9dfae0d09fd599fce6d76
Author: Tobias Burnus <tburnus@baylibre.com>
Date:   Mon Jan 29 11:20:49 2024 +0100

    install.texi: For gcn, recommend LLVM 15, unless gfx1100 is disabled
    
    gcc/ChangeLog:
    
            * doc/install.texi (amdgcn): Recommend LLVM 15+ and newlib 4.4+,
            but keep requiring only newlib 4.3+ and, if gfx1100 is disabled,
            LLVM 13.0.1+.
    
    Signed-off-by: Tobias Burnus <tburnus@baylibre.com>

Diff:
---
 gcc/doc/install.texi | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/gcc/doc/install.texi b/gcc/doc/install.texi
index 5747b5a12fe8..c77944391077 100644
--- a/gcc/doc/install.texi
+++ b/gcc/doc/install.texi
@@ -3927,14 +3927,15 @@ This is a synonym for @samp{x86_64-*-solaris2*}.
 @heading amdgcn-*-amdhsa
 AMD GCN GPU target.
 
-Instead of GNU Binutils, you will need to install LLVM 13.0.1, or later, and copy
+Instead of GNU Binutils, you will need to install LLVM 15, or later, and copy
 @file{bin/llvm-mc} to @file{amdgcn-amdhsa/bin/as},
 @file{bin/lld} to @file{amdgcn-amdhsa/bin/ld},
 @file{bin/llvm-nm} to @file{amdgcn-amdhsa/bin/nm}, and
 @file{bin/llvm-ar} to both @file{bin/amdgcn-amdhsa-ar} and
-@file{bin/amdgcn-amdhsa-ranlib}.
+@file{bin/amdgcn-amdhsa-ranlib}.  Note that LLVM 13.0.1 or LLVM 14 can be used
+by specifying a @code{--with-multilib-list=} that does not list @code{gfx1100}.
 
-Use Newlib (4.3.0 or newer).
+Use Newlib (4.3.0 or newer; 4.4.0 or later is recommended).
 
 To run the binaries, install the HSA Runtime from the
 @uref{https://rocm.docs.amd.com/,,ROCm Platform}, and use